Navigable Waterways in the Maryland transit source collection

Name: Navigable Waterways in the Maryland transit source collection
Creator: MD iMAP
License: https://www.arcgis.com/sharing/rest/content/items/c65b32c3c23f43169797f7b762ba1770?f=json

Explore 666 source records for Navigable Waterways in the Maryland transit source collection. View the map or download the GeoJSON snapshot.

State of Maryland; MD iMAP, MTA Prepared by Draw on a Map on 2026-10-09. Source fields retained; a name field is added where available. Geometry is not simplified.

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The table shows up to eight fields. The download keeps all fields and the original geometry.

About this dataset

Snapshot prepared on 2026-10-09. This is not a live service. The source update date can be earlier.
All 666 records returned by the selected layer are retained. Count and object IDs were checked before download. The selected layer is not a complete inventory of all places in the region.
Source coordinates are transformed by the service to WGS84; altitude and measure values are omitted. Geometry is not simplified. Source fields are retained; a display name is added where a source name is available.
Original source metadata and reuse evidence: https://drawonamap.com/library/sources/government-2026-10/navigable-waterways-in-the-maryland-transit-source-collection-6de674aa.json
Preserve the original source metadata entry without changes.
Acknowledge the State of Maryland in derived-data metadata.
Distribute the unchanged original source XML metadata with the derived data.

Source and licence

MD iMAP

Licence: Maryland data redistribution terms

GeoJSON download details

The download includes all 666 features as lines. Coordinates use longitude and latitude in WGS84.

The preparation date is when we prepared this dataset. Read the source notes for the dates covered by the data.

GeoJSON fields 18

OBJECTID: GIS Object ID. Source field from MD iMAP.
LINKNAME: Link Description. Source field from MD iMAP.
RIVERNAME: River Name. Source field from MD iMAP.
AMILE: Milepost at Starting Node. Source field from MD iMAP.
BMILE: Milepost at Ending Node. Source field from MD iMAP.
LENGTH1: Line Length in Miles. Source field from MD iMAP.
WATERWAY: Waterway Code. Source field from MD iMAP.
GEO_CLASS: Geographic Class. Source field from MD iMAP.
FUNC_CLASS: Functional Class. Source field from MD iMAP.
WTWY_TYPE: Waterway Type. Source field from MD iMAP.
CHART_ID: NOAA Chart Number. Source field from MD iMAP.
NUM_PAIRS: Number of Link Coordinate Pairs. Source field from MD iMAP.
WHO_MOD: Organization that Modified Link. Source field from MD iMAP.
DATE_MOD: Modification Date. Source field from MD iMAP.
HEADING: Compass Heading. Source field from MD iMAP.
STATE: State Postal Abbreviation. Source field from MD iMAP.
Shape__Length: Shape.STLength(). Source field from MD iMAP.
name: Display name copied from the source name field.